Ruling attachment for engraving-machines.



(.Nn Model.)

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NITED STATES PATENT OFFICE.

WILLIAM s. EATON, or sAe HARBOR, NEW YORK.

RULING ATTACHMENT FOR ENGRAVlNG-MACHINES.

SPECIFICATION forming part of Letters Patent No. 648,396, dated May 1, 1900.

Y Application filed December 6, 1899. Serial No. 739,382. (No model.)

To LLZZ whom zit may concern:

Be it known that l, WILLIAM S. EATON, a citizen of the United States, and a resident of Sag Harbor, Suffolk county, Stateof New York, have invented certain new and useful Improvements in Ruling Attachments for En.

' a plan of a plate or work-piece engraved by a machine provided with my attachment. Fig. 2 is a plan of the ruling attachment; Fig. 3, an elevation, partly in section, of the same; Fig. 4, a cross-section on line 4 4, Fig.- 3; Fig. 5, a cross-.section on line 5 5, Fig. 3; Fig. 6, a detail of a division-plate 7o', showing a different arrangement of notches from thatshown in Fig. 5; Fig. 7, an enlarged sectionon line 7 7, Fig. 2; and Fig. 8, a crosssection on line 8 8, Fig. 2. v

The letter ct represents the base-plateof the attachment, adapted to be secured to the frame of the engraving-machine by screws c."

or otherwise. From the plate ct project the arms b, that constitute or support the bearings of-a feed-screw c. The screw c passes loosely through the perforation d' of a carrier d, provided with a sectional nut or iinger c, which is by a spring c held in engagement with the thread of screw o.,

To the base of carrier d is pivoted at f a toothed sector g, which is engaged by a worm h, turning in bearings d2 of carrier rl. A clamp-screw e', passing through a concentric slot d3 of carrier d and into the sector g, serves to clamp the sector to the-carrier after the latter has been adj usted bythe worm in manner hereinafter described. y

To the sector g there is attached, by screws j or otherwise, a ruler or patternplatej,which is adapted to be turned on pivot f by means of the sector g and worm h, so that the ruler may be set at anydesired angle with relation to the baseplate o. The ruler j is provided with a number of straight, sinuous, broken, or other grooves or lines y2 or with any other grooved pattern which is to be followed by the lower tracer of the engraving-machine and is to be reproduced upon the work-piece, block,y seal, dto., A by the upper tool. The rulerj is preferably made of celluloid or other transparent material, so that a pattern-plate B placed underneath the same remains visible through the body of the ruler. The pattern of this plate may be passed over or skipped by the tracer, so as to become reproduced within the hatching of the engraved work-piece, Fig. l.'

The screw c is adapted to be turned by a removable and interchangeable knob 7c, pro-` vided with a spacing or division plate 7c', having a notched periphery. This plate is adapted to be engaged by a spring catch or click k2, secured to one of the arms h.` The divisions of plate 7o may be dierently arranged, according to the work to be done, so thatthe hatching is either equally spaced or interrupted between groups of hatching-lines- Thus by the plate 7a' of Fig. 5 the lines will be spaced equally, while with the plate k' of Fig. 6 the lines will be so spaced that every pair of lines will be separated from t-he adjoining pair .by an open space.

In use screw t' is slackened and the sector g turned by worm 7L until the ruler j has assumed the desired angle with'relationto the base-plate a, when the screw t' is tightened up. The ruler, together with the carrier and sector, are now moved along the screw c by turning knob 7c, which advances the ruler by reason of the engagement of finger e with the screw-thread. Whenever the click lo? falls into a notch of division-plate 7o', the motion of the screw is arrested and the tracer is drawn over the selected line jg of ruler j, so as to form a corresponding line by the tool in the work-piece A. After a line has thus been formed the knob 7a is turned to advance the ruler one space, and the operation is repeated, the consecutive positions of the ruler remaining thus parallel for the same adjustment of the sector. In this way a uniform hatching or similar effect may be produced in which all the lines run parallel and are inclined/ to any desired angle.' By running over the work two or more times with the 'ruler atmddif-Eerent angles Ycross hatching vmay alsoy be produced in aA sirnplenand acclirate manner. l

What I claim is- Y l1. A ruling attachment for engravingmachines, composed 'of a feed screw, inter-` changeable knobsv adapted to be secured thereto and having differently-spaced division-plates, a carrier actuated by the feedsciew, a sector pivoted to the carrier, a ruler movable with the sector, and means forv adjusting the position Aof the sector With relation to the carrier, substantially as specied 

